ToolPal

JWT解码器

解码和检查JSON Web令牌(JWT)。查看头部、有效载荷、声明和过期状态。

使用方法

解码和检查JSON Web令牌(JWT)。查看头部、有效载荷、声明和过期状态。

  1. 1Paste a JWT token (three Base64url segments separated by dots) into the input field.
  2. 2The tool decodes and displays the Header, Payload, and Signature sections.
  3. 3Review the claims in the Payload: `iss`, `sub`, `exp`, `iat`, and any custom claims.
  4. 4Check the expiration status — the tool highlights whether the token is expired.

主要功能

  • Decodes JWT header, payload, and signature without any server request
  • Displays all standard and custom claims in formatted JSON
  • Shows token expiration status and remaining time or time since expiry
  • Handles HS256, HS384, HS512, RS256, and other common algorithms

常见问题

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